Rock band from Philly / New Jersey area. Straight-up rock with melodic vocals. Zero Sum was formed in 1999, when vocalist Tom Schaeffer joined an exsisting group: Chris Hartman - Lead Guitar, Keith Granstrom - Bass Guitar, and Brad Groatman - Drums, after following an ad on a musican's search website. The group hit it off and immediatly pondered the idea of writing songs, while they were busy learning new cover tunes. After their first several gigs as a cover band, the writing began. Soon they realized that they had something special. Zero Sum's sound mixes the band's rock background with their love for a great vocal melody.